Hundreds of people might still be trapped under the rubble of buildings, the Indonesia's National Disaster Management Agency said. Rescue teams were still not able to reach all the affected areas, the BBC reported.

An estimated 2.4 million people were affected by the disaster, said the disaster management agency spokesman Sutopo Purwo Nugroho. He said that 800 were badly injured and more than 61,000 people were displaced.

Indonesia is located on the so-called Ring of Fire of the Pacific, an area of great seismic and volcanic activity that experiences about 7,000, mostly moderate earthquakes every year.